Dielectric and magnetic behavior of Sr-modified vanadium based double perovskite

Abstract

The Sr-modified vanadium-based double perovskite Ba1.5Sr0.5FeVO6 was synthesized by conventional solid solution casting procedure at an optimized temperature 1225 °C. The preliminary structural investigation was carried out through X-ray diffraction (XRD) and scanning electron microscope (SEM). Fourier transforms infrared (FTIR) technique was utilized to distinguish among the different modes of vibration of the elements in the compound. The band gap (2.76 eV) of the material was evaluated through the UV–Visible spectroscopy technique. Dielectric and related measurements were conducted through LCR meter in the frequency range (100 Hz–5 MHz) under the temperature range (25 °C-–500 °C). Room temperature dielectric constant (εr ~ 500) and tangent loss (tanδ ~ 0.08) at 10 kHz suggests material may be useful for multilayer capacitor and other storage devices. Non-destructive impedance spectroscopy (IS) techniques have been adopted for electrical characterization. In addition to the IS further electrical features have been investigated through ac and dc conductivity spectra . For magnetic behavior of the material (M-H) hysteresis was carried out at room temperature to investigate the magnetic properties of the material.